William wewers



(No Model) W. WEWERS.

DRAFT DOOR ADJUSTER.

N0. 585,608- Patented June 29,1897,

UNITED STATES.

PATENT OFFICE.

I VILLIAM WVEYVERS, OF QUINCY, ILLINOIS, ASSIGNOR TO THE GEM CITY STOVEMANUFACTURING COMPANY, OF SAME PLACE.

DRAFT-DOOR ADJUSTER.

SPECIFICATION forming part of Letters Patent No. 585,608, dated June 29,1897. Application filed November 3, 1896. Serial No. 610,968. (Nomodel.)

To all whom it may concern.-

Be it known that I,WILLIAM WEWERS, a citizen of the United States,residing at Quincy, in the county of Adamsand State of Illinois, haveinvented new and useful Improvements in Draft-Door Adjusters, of whichthe following is a specification.

This invention relates to stoves, ranges, furnaces,and the like whichare provided with hinged or pivoted draft-doors having means wherebythey may be adjusted to regulate the draft.

The chief object of my invention is to provide a screw mounted on,moving with, and solely supported by the draft-door in such manner thatthe latter may be readily adj usted to regulate the draft andconveniently opened to its full extent without detaching or moving thescrew from the door which carries it.

To accomplish this object, my invention consists, essentially, in thecombination,with a door-frame having a lug or projection and an openingand closing draft-door, of a rotatable screw mounted in, moving with,and solely supported by the draft-door and constructed to engage the lugor projection, said screw having a part of its screw-thread or spiralflange mutilated or omitted to disengage the screw from the lug orprojection when the mutilated or omitted part of the screw-thread orspiral flange opposes said lug or projection, as will be more fullyhereinafter described in detail, reference being made to theaccompanying drawings, in which- Figure 1 is a perspective view showinga portion of a heating-stove provided with my invention. Fig. 2 is adetail vertical sectional view taken centrally through the front part ofthe stove. Fig. 3 is a detail perspective view of the screw and the lugor projection with which the screw engages to adjust the draft-door; andFig. 4:.is a similar view showing the position of the screw relativelyto the lug or projection when the mutilated or omitted part of thescrew-thread or spiral flange opposes or lies opposite the lug orprojection, so that the draft-door can be opened to its full extentwithout detaching or removing the screw from the door which carries it.

In order to enable those skilled in the art to make and use myinvention, I will now describe the same in detail, referring to thedrawings, wherein The numeral 1 indicates the front portion or main doorof a heating-stove of any known or desired construction, and 2 thehinged or pivoted draft-door, which is susceptible of swinging in thearc of a circle, so that it may be more or less opened to suit theconditions I required.

As before stated, the object of the present invention is to providemeans foradjusting the draft-door and for enabling the latter to beconveniently opened to its full extent, and therefore I wish it clearlyunderstood that my invention may be used in connection with a stove,range, furnace, or heater of any construction whatever, and that insteadof the front part of the stove or heater being in a form of a main door,as shown in the drawings, it may be the front wall of the stove orheater, and the draft-door be mounted at any suitable part thereof.

For the purposes of this description the part into or upon which thedraft-door 2 seats when closed may be termed a door-frame. Thisdoor-frame is constructed or provided at its upper side With a pendentlug or projection 3, preferably having an approximately rectilinearlower edge. The pivoted or hinged draft-door 2 is provided centrallybetween its ends with a cylindrical socket 4:, in which is journaled thecylindrical shank 5 of a screw 6, which commences in juxtaposition tothe inner end of the cylindrical part 5 and terminates in a mutilated oromitted section 7 at the inner end of the body of the screw. Thecylindrical body portion 5 of the screw is provided atit-s outer endportion with an annular or circular flange or rib 8, which seats into acorrespondingly-shaped seat in the front surface of the draft-door. Theflange or rib 8 is joined to a projecting handle or finger-piece 9 ofsuch construction, form, or shape that it may be grasped for the purposeof axially rotating the screw in its cylindrical seat or socket in thedoor. The cylindrical portion of the screw m ay be retained in operativeconnection with the draft-door through the medium of any suitabledevices, but as here shown this is accomplished by riveting or otherwiseattaching a metallic disk, plate, or washer 10 to the door, so that theperiphery of the disk, plate, or washer overlaps the annular or circularflange or rib 8. This construction of parts is advantageous in that itenables the screw as a whole to be economically and practicably appliedto the door and held in proper position therein.

The screw-thread or spiral flange of the screw is designed to engage theedge of the lug or projection 3 in such manner that by rotating thescrew in one or the other direction the draft-door will be swung 011 itshinges or pivots, and consequently can be nicely adjusted to increase ordiminish the draft-opening and thereby regulate the draft. Inasmuch asit is desirable to frequently open the draft-door to its full extent, Imutilate or omit the inn er end portion of the screw-thread or spiralflange, as at 7, so that when this mutilated or omitted part opposes orlies opposite the lug or projection 3 the screw is disengaged ordisconnected from the lug and the draft-door can be swung entirely openwithout detaching or removing the screw from the door, in which respectmy invention is advantageous over prior constructions wherein a screw isrivet-ed to a stove-body and engages a recess in a damper and a screwengages a screw-threaded socket in the stove-body and has rotatableconnection with the draft-door.

In the prior construction first mentioned the damper can only beadjusted a limited extent and the screw cannot be engaged with anddisengaged from the body of the stove, while in the other priorconstruction referred to the screw is not solely supported by thedraft-door and cannot be practicably disengaged from the stove bodyexcept by entirely unscrewing it therefrom, which is difficult toaccomplish in that the draft door moves in the arc of a circle, whilethe screw moves back and forth in a right line.

In my improved construction the screw is mounted in and moves with thedraft-door and is solely supported thereby, and by making thescrew-thread or spiral flange of comparatively great pitch,substantially as shown in the drawings, the draft-door can be caused tomove in the arc of a circle, and whenever desired the screw can beconveniently and quickly disengaged from the lug or projection for thepurpose of opening the draftdoor to its full extent.

The width of the groove formed by the spiral flange of the screw isconsiderably greater than the thickness or width of the lug orprojection 3 for the purpose of affording sufficient play between theseparts so that the draft-door can be practically moved in the arc of acircle, while the screw remains substantially horizontal.

By myinvention I am able to secure a sub stantially air-tight closure ofthe door and an even distribution of air into and'under the fire, and Iprovide a draft-regulator which may be readily applied to any kind ofstove or heating apparatus where the draft requires to be regulated. Thedraft-door may be applied to the main door, as in the drawings, or itcan be used independently of the main door, as will be obvious withoutfurther explanation.

Having thus described my invention, I claim is- 1. The combination witha door-frame having a lug or projection, and an opening and closingdraft-door, of arotatable screw mounted in, moving with and solelysupported by the draft-door, and constructed to engage the lug orprojection, said screw having a part of its screw-thread or spiralflange mutilated or omitted to render the screw susceptible of quickdisengagement from the lug or projection when the mutilated or omittedpart of the screw opposes said lug or projection, substantially asdescribed.

2. The combination with a door-frame having a lug or projection, and anopening and closing draft-door havinga cylindrical socket, of arotatable screw having a cylindrical portion journaled in said socket, adevice for holding the screw in permanent operative connection with thedoor so that the screw moves with and is solely supported thereby, saidscrew having a part of its screw-thread or spiral flange mutilated oromitted to render the screw susceptible of quick disengagement from thelug or projection when the mutilated or omitted part of the screwopposes said lug or projection, substantially as described.

3. The combination with a door-frame having a lug or projection, and anopening and closing draft-door having a cylin drical socket, of arotatable screw mounted in said cylindrical socket and having an annularor circular flange or rib and a handle or fingerpiece, and a plate orwasher attached to the door and overlapping the annular or circularflange or rib to hold the screw in positive connection with the door,whereby the screw moves with and is solely supported by the door, saidscrew having a part of its screwthreaded or spiral flange mutilated oromitted to render the screw susceptible of quick disengagement from thelug or projection when the mutilated or omitted part of the screwopposes said lug or projection, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

what

WILLIAM WEWERS. WVitnesses:

Louis 0. ZANDER, WM. H. HEIDBREDER.

